equivalent/primal_instinct

module PrimalInstinct
  module Multificator
    def self.multification_table(values)
      table = []
      return table if values.empty?
      ([1] + values).each do |row|
        table << ([1] + values.dup).map { |e| e * row }
      end
      table[0][0] = nil
      table
    end
  end
end